In re Marriott International Customer Data Security Breach Litigation

U.S. Court of Appeals for the Fourth Circuit

Tab Group

Merits Stage

U.S. Chamber files coalition amicus brief arguing that Fourth Circuit should reverse class certification where class members cannot be readily identified and the claims on which the district court authorized an “issues class” cannot satisfy Rule 23(b)(3)

October 3, 2022

Click here to view the coalition amicus brief. Ashley C. Parrish and Julianne L. Duran of King & Spalding LLP and the U.S. Chamber’s Litigation Center served as co-counsel for the U.S. Chamber.

Petition Stage

Petition for review granted

July 14, 2022

U.S. Chamber files coalition amicus brief

May 25, 2022

The brief urges Fourth Circuit to review decision certifying a class whose members cannot be readily identified and an “issues” class to pursue elements of negligence when the negligence claim itself could not satisfy Rule 23(b)(3).

Ashley C. Parrish of King & Spalding LLP and the U.S. Chamber’s Litigation Center served as co-counsel for the U.S. Chamber.

Case Documents

Lower Court Opinion -- In re Marriott International Customer Data Security Breach Litigation (D. Md.).pdf

U.S. Chamber Coalition Amicus Brief (22-181) -- In re Marriott International Customer Data Security Breach Litigation (Fourth Circuit).pdf

U.S. Chamber Coalition Amicus Brief (22-184) -- In re Marriott International Customer Data Security Breach Litigation (Fourth Circuit).pdf

U.S. Chamber Coalition Amicus Brief -- In re Marriott International Customer Data Security Breach Litigation (Fourth Circuit).pdf